有没有用i945集成显卡的，请教一些问题。

jyr_king

我在我的笔记本上安装了Gentoo，没有什么别的毛病，就是测试显卡的时候总是出现以下问题：
libGL warning: 3D driver claims to not support visual 0x5b
do_wait: drmWaitVBlank returned -1, IRQs don't seem to be working correctly.
Try running with LIBGL_THROTTLE_REFRESH and LIBL_SYNC_REFRESH unset.
6233 frames in 5.0 seconds = 1246.441 FPS
14385 frames in 5.0 seconds = 2876.980 FPS
20044 frames in 5.0 seconds = 4008.698 FPS
19908 frames in 5.0 seconds = 3980.934 FPS
19613 frames in 5.0 seconds = 3922.516 FPS
19350 frames in 5.0 seconds = 3869.409 FPS
19359 frames in 5.0 seconds = 3871.699 FPS
19469 frames in 5.0 seconds = 3893.682 FPS
19055 frames in 5.0 seconds = 3810.915 FPS
10332 frames in 5.1 seconds = 2032.758 FPS
7189 frames in 5.2 seconds = 1378.343 FPS

测试出来的帧数也不稳定，搞不懂是怎么回事。虽然不影响使用，但很别扭。我想安装xgl也没能成功。用过liveCD，xgl效果是可以开起来的。想问坛子里有没有遇到同样问题的或有经验的大侠，这是什么问题，怎么解决？